含复合储能和燃气轮发电机的直流微电网母线电压波动分层控制策略  

Hierarchical Control Strategy of Voltage Fluctuation in DC Microgrid Consisting Gas-Turbine Generator and Composite Energy Storage

作　　者：张继红[1] 王洪明 魏毅立[1] 吴振奎[1] 杨培宏[1] Zhang Jihong;Wang Hongming;Wei Yili;Wu Zhenkui;Yang Peihong(Inner Mongolia Key Laboratory of Solar and Wind Power Inner Mongolia University of Science and Technology Baotou 014010 China)

机构地区：[1]内蒙古自治区光热与风能发电重点实验室(内蒙古科技大学),包头014010

出　　处：《电工技术学报》2018年第6期1238-1246,共9页Transactions of China Electrotechnical Society

基　　金：内蒙古自治区自然科学基金资助项目(2016MS0515)

摘　　要：为解决微电网运行时惯性小、模式多、对负荷敏感等问题而引发的母线电压波动现象,从储能系统的配置优化着手,在考虑荷电状态的基础上依据直流母线电压波动幅值进行抑制,提出一种直流微电网母线电压分层协调控制策略。主要利用混合储能的互补特性以及燃气轮机的快起动优势,按照预期设计的七种模式精准抑制电压波动,建立各自模式的功率终端和松弛终端调配机制模型,给出硬件电路和软件设计流程,采用PSCAD/EMTDC大型仿真软件与新能源发电、储能综合实验平台的测试结果表明:所提控制策略合理可行,达到了抑制母线电压波动的目的,满足预期设计要求。In order to solve the problem of voltage fluctuations caused by the low inertia,multi-mode,load sensitivity and other issues while microgrid is in operation,this paper discussed the configuration optimization of storage system.Taken the state of charge into consideration,the DC bus voltage is suppressed according to the voltage fluctuation amplitude,and then a hierarchical coordinated control strategy is put forward for the bus voltage in DC microgrid.This paper mainly utilized the complementary characteristics of the hybrid energy storage and the advantages of the gas turbine to suppress the voltage fluctuations precisely by the expected design of 7 modes.The models of power terminal and relaxation terminal coordinated mechanism were established in each model,and the hardware circuit and software flow were given.Through PSCAD/EMTDC simulation system as well as new energy power generation and energy storage integrated experimental platform,it is shown that the proposed control strategy is reasonable and feasible,and can meet the needs of expected design.

关 键 词：直流微电网 电压波动抑制 双储能 分层控制 下垂调节 

分 类 号：TM761[电气工程—电力系统及自动化]